72576530 has 32 divisors (see below), whose sum is σ = 141571584. Its totient is φ = 26629056.

The previous prime is 72576509. The next prime is 72576533. The reversal of 72576530 is 3567527.

It is not an unprimeable number, because it can be changed into a prime (72576533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20039 + ... + 23381.

It is an arithmetic number, because the mean of its divisors is an integer number (4424112).

Almost surely, 2^72576530 is an apocalyptic number.

72576530 is a deficient number, since it is larger than the sum of its proper divisors (68995054).

72576530 is a wasteful number, since it uses less digits than its factorization.

72576530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 72576530 is about 8519.1859939785. The cubic root of 72576530 is about 417.1242127576.

The spelling of 72576530 in words is "seventy-two million, five hundred seventy-six thousand, five hundred thirty".